Jegatron - electronics

altium

Anonymous (anonymous@undisclosed.example.com) — 2023-03-28T05:50:35+00:00

Altium Koncept att kolla upp * Rooms Footprints Collision Good stuff Shortcut keys General Schema * Show all pages which signal appears on: alt+double click * Highlight net: alt-click * Ensure symbols are created with mil-grid and not metric Layout

batteries

Anonymous (anonymous@undisclosed.example.com) — 2022-09-12T00:30:54+00:00

General * PCM -- Protection Circuit Module * SU -- Safety Unit * BMS -- Battery Management System * Battery gauge -- Monitors battery health, capacity, percentage etc Resellers Jauch Varta Actec Awilco Celltech Certification Farnell's guide to batteries Also good info about certification.

bmp280

Anonymous (anonymous@undisclosed.example.com) — 2023-01-15T13:25:40+00:00

BMP280 Digital Pressure Sensor Datasheet Property Value Comment Vdd 1.71 V - 3.6 V VddIO 1.20 V - 3.6 V

capacitors

Anonymous (anonymous@undisclosed.example.com) — 2025-08-04T06:55:00+00:00

Capacitors Common voltage ratings: 6.3, 10, 16, 25, 50, 100, 250, 500 Av någon anledning skippas prefixet nano av traditionella skäl: 820pF, 1000pF, 10000pF, 0.1µF, 1µF Ceramic Max capacitance per package size Det finns något som kallas soft termination, det innebär mekaniskt mjuk anslutning genom att ett lager hartz finns med i kapslingen för att minska känsligheten för bland annat termisk stress.

components

Anonymous (anonymous@undisclosed.example.com) — 2024-11-14T11:19:10+00:00

Go-to components list (and honorable mentions) Components that I should remember, they might be parts I have used or gotten recommendations about. Document with lot of footprints: JRC footprints Reddit image with lot of component types -- The updated picture MCU PIC18F47J13 -- Pic with nanoWatt tech. sub 1µA current consumption.

electronics_engineering_websites

Anonymous (anonymous@undisclosed.example.com) — 2022-09-12T00:30:54+00:00

These are links to electronics engineering sites that showed up as alternatives in a study i got invited to. Allaboutcircuits.com Circuit Digest EDN EE Power EE Times EDAboard.com EE World Online EEJournal EEVblog EEWeb Electronic Design Electronic Products Electronic Specifier Electronics360 ElectronicsPoint ElectronicsTutorials electropages.com electropages.com ElProCus embedded.com hackaday.com Hackster I-Connect007 IEEE Spectrum Maker Pro Sem…

emc

Anonymous (anonymous@undisclosed.example.com) — 2022-09-12T00:30:54+00:00

EMC Resources * Reduce Conducted EMI in Automotive Buck Converter Applications * Design Considerations for EMI Reduction in Automotive Power Management Systems

esp8266

Anonymous (anonymous@undisclosed.example.com) — 2023-01-25T18:56:10+00:00

ESP8266 De tre korten jag fick från Carl verkar ha en ESP8266-modul av modellen esp12e alternativt esp12f. Själva kortet tycks vara en D1 Mini Datasheet Pinout ESPHome docs Property Value Comment Operating voltage 3.0 V - 3.6 V Input logic low -0.3 - 0.25VDD Max 0.825 @ 3.3 V

i2c

Anonymous (anonymous@undisclosed.example.com) — 2022-09-12T00:30:54+00:00

I²C UM10204 -- I²C specification from NXP

knowledge

Anonymous (anonymous@undisclosed.example.com) — 2023-08-10T11:41:04+00:00

Electronics knowledge Links to interesting topics Link Topic Comment Youtube Do You Really Need Power Planes? Are you sure? Signal Integrity Interesting discussion related to why not to use power planes and instead use only ground planes Analogs electronics course Basic electronics Has a bunch of OP and transistor circuits analysed

ltspice

Anonymous (anonymous@undisclosed.example.com) — 2022-09-12T00:30:54+00:00

General Website -- Download link -- Active ltspice group Quick guide Key Description F1 LTSpice help file, really good when you learn to navigate it F2 Place part F3 Place wire F4 Place net name F5 Delete F6 Copy F7 Move F8 Drag F9 Undo Ctrl + R Rotate selection

resistor

Anonymous (anonymous@undisclosed.example.com) — 2022-09-12T00:30:54+00:00

Resistor Vishay - Non-Linearity of Resistance/Temperature Characteristic

smd_packages

Anonymous (anonymous@undisclosed.example.com) — 2022-09-12T00:30:54+00:00

Summary Package Max power Length Width 01005 31 mW 0.40 0.20 0201 50 mW 0.60 0.30 0402 60 mW 1.00 0.50 0603 60 mW 1.60 0.80 0805 100 mW 2.00 1.25 1206 125 mW 3.20 1.60

switching_regulators

Anonymous (anonymous@undisclosed.example.com) — 2024-06-01T09:13:13+00:00

General The energy stored in a capacitor is described by $ E=\frac{LI^2}{2} $ A MOSFET can be used instead of the rectifier diode, a so called synchronous rectifier, to improve efficiency. Skip Mode is a feature that improves efficiency at light loads. But it generates more noise that is difficult to filter.